Product Colors and Sizes

  • Black Friday product
  • New Deal product
  • Cyber Monday product
  • Clearance product
  • Deal product
  • Best Seller product
  • Ecodesign product
  • New product
  • Staff Pick product
  • In The News product
  • Innovation product
  • product

Backpacking Sleeping Bag 50° Trek500

Sale price: $40.00 Regular price: $54.99

Sleeping bag can be paired with the "ultralight" 2017 and "light" 2018 range. Wide T° range: 50 to 68°F for improved comfort thanks to 2 x 3/4 zippers with double slider for heat management.

Color: Select a color
Size: Select a size
Sale price: $40.00 Regular price: $54.99

Free shipping over $49

Final Sale: No returns or exchanges

See our return rules

Free pickup

San Francisco, 735 Market St. Options

Select an available color and size to see options.

Model: 8504929

Product Features

A photo of the Backpacking Sleeping Bag 50° Trek500 in use

Backpacking Sleeping Bag 50° Trek500 | Passionate about backpacking, our designers have created this sleeping bag to sleep comfortably at temperatures above or equal to 50°F.

Sleeping bag can be paired with the "ultralight" 2017 and "light" 2018 range. Wide T° range: 50 to 68°F for improved comfort thanks to 2 x 3/4 zippers with double slider for heat management.

Optimal temperature

Comfort temperature rating 50°F / Limit temperature rating 41°F

Easy to transport

In size L: weighs 2.1 lbs. Volume 7 liters. Stuff bag.

Sleeping comfort

Very comfortable mummy shape. 2 x 3/4 zippers with 2-way slide to ventilate.


Can be twinned with other models from the "Ultralight" 2017 & "light" 2018 range

Water repellent

Water-repellent fabric to optimize the thermal performance of your bag.

Questions & Answers

Product Customer Reviews

Skip to reviews
606 Reviews
Write a Review 

Backpacking Sleeping Bag 50° Trek500,navy blue
Filtered by reviews Loading reviews…
Great light weight compact and warm sleeping bag,

Great sleeping bag, my daughter loves it and it is the perfect size for her being 10 A little bit synthetic field to the inner, I would recommend a cotton liner with this one

icon-circle-checkmark verified purchase
Very good bag

Very good sleeping bag - used it many time for use in un-heated buildings/shelters in the summer and its perfect! The dual zip is a nice touch!

Great warm 3 season bag

Invest in a liner And a bivvy outer bag And you’ll be sorted What ever they weather in the uk is And even throw on your base layer If needed

icon-circle-checkmark verified purchase
Good piece of kit

Compact size really warm

icon-circle-checkmark verified purchase
Great sleeping bag

Warm cosy sleeping bag. Great for adults and children.

icon-circle-checkmark verified purchase

Really comfy sleeping bag.

Forclaz sleeping bag Trek 500

Good to find a warm sleeping bag even in 7 Celsius degree in top of Mount Prau, Dieng. Thanks to Decathlon to make my sleep on a mountain more relaxing and comfortable


Satisfied with the quality

icon-circle-checkmark verified purchase
Trek500 sleeping Bag

Not comfortable

icon-circle-checkmark verified purchase
Really good

Reasonable Price and everything’s good about it

icon-circle-checkmark verified purchase
i liked the sleeping bag

it is very good product my hight is 5 '8 it suits my hight.The sleeping bag is slimer so sometimes i face difficulties while sleeping. Anyway am happy with the product

icon-circle-checkmark verified purchase
Great sleeping a'bag

Good sleeping bag if you're looking for a light yet warm sleeping bag.

icon-circle-checkmark verified purchase

Good product

icon-circle-checkmark verified purchase
Value for money

Used it on Mt. Pulag, kept me warm on the stormy night in camp 2.

icon-circle-checkmark verified purchase
Malé a lahké balení. Dostatečně teplý.

Lze spojit s druhým spacákem.

icon-circle-checkmark verified purchase
Skip to reviews

Additional Product Information



  • 100% Polyester cationic


  • 100% Polyester cationic

Outer fabric

  • 100% Polyester cationic

Carry bag

  • 100% Polyester cationic

User temperature

On all of our sleeping bags, we display the comfort temperatures tested by an independent laboratory (AITEX) according to European standard NF ISO 23537 - 2017. The temperature rating is the lower limit at which the user is generally in thermal equilibrium and feels neither too cold nor too hot in a relaxed pose (for a standard woman and in normal conditions of use). Choose your sleeping bag according to the latter.

What are the "limit" temperatures of use?

Limit temperature: temperature at which the user huddled up in the sleeping bag is generally in thermal equilibrium and feels neither too cold nor too hot (defined for a standard man under normal conditions of use).

However, what you need to know about temperatures

A sleeping bag does not generate warmth but retains the warmth produced by the body. If you feel tired and cold and slip into a cold and damp sleeping bag, you are likely to feel cold, however good it is! These temperatures therefore depend on the person's resistance to the cold (bulk, fatigue, etc.), their equipment (mattress that insulates from the cold, etc.), their clothing (naked, underwear, etc.) and the weather conditions (humidity, wind, etc.).

For greater comfort before sliding into your sleeping bag

Dress simply (just 1 layer of clothing is enough). Keep your head, hands and feet warm: hats, gloves, socks, hand or feet warmers, rubdown, etc. A bottle full of hot water can be used as a hot water bottle (as long as it will not open accidentally!) Contract your muscles (70% of the energy consumed is transformed into heat). However you should do this without moving as this can cause drafts of cold air. Use a liner sheet, ideally made of silk, to optimize the warmth inside your sleeping bag.


"Generous" mummy shape: wide at the shoulders and more narrow at the feet to optimize thermal insulation (no heat loss) and compact size, while retaining some freedom of movement. Width at shoulder height 30.1" and at feet height 12.6" in size L. Ergonomic hood with drawstring. 2 side zippers with double sliders, lined with a flap (sausage-shaped) made of insulating padding (thermal bridges) and side openings.

Weight and dimensions

Size M 2 lbs, user up to 5'7". Dimensions folded: H 13" Ø 6.3". Volume 6 liters. Size L 2.1 lbs, user between 5'7" and 6'1". Dimensions folded: H 13" Ø 6.7". Volume 7 liters. Size XL 2.3 lbs, user between 6'1" and 6'7". Dimensions folded: H 13" Ø 7.1". Volume 8 liters. Try your sleeping bag before buying it to choose the right size to ensure your comfort.


This sleeping bag is guaranteed for a period of 5 years from the date of sale indicated on the receipt. The product covered by the warranty will be repaired or exchanged free of charge. The warranty covers the defects of your sleeping bag apart from those resulting from normal wear and tear and improper use. This special 5-year warranty will only be granted upon presentation of the product and sales receipt.



Storage instructions

Easily store your bag by stuffing it in its bag, feet end first. To maintain its fill power, which is what provides the thermal insulation, remove the bag and store it flat in a dry place.

Superior quality. Unbeatable prices.

For 40 years, Decathlon has delivered the best value in the retail sports industry by offering high-quality, sustainable and cost-effective products.

Decathlon makes the difference
  1. product-research

    Research and development

    delivers high-quality cost-effective products

  2. State-of-the-art production processes

    minimize manufacturing costs

  3. Optimized supply chain

    reduces retail prices

  4. laptop-checkout

    Minimal retail footprint

    lowers overhead and indirect costs


Size Guide Visual

Please Sign In to Post Your Question

In order to notify you about the answer it is required to Sign In.

Sign In